The circumference of a circle is equal to 72 pi. Find the radius of this circle.

john Smith November 30, -0001 The circumference of a circle is equal to 72 pi. Find the radius of this circle.2011-09-02T06:01:43+00:00

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September 2, 2011 at 6:01 am #1934

john Smith
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The circumference of a circle is equal to 72 pi. Find the radius of this circle.

September 2, 2011 at 6:02 am #10519

ahprofessional
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C = 2 pi r, where r is the radius of the circle.

Substitute C by 72 pi to obtain the equation

72 pi = 2 pi r

Simplify and solve for r to obtain

r = 36
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